One way I've seen is to light a match or a lighter and hold the flame near the hose. If it's sucking in air it'll pull the flame towards it. I probably wouldn't suggest this method around the fuel system on your bike though ;) You can also pick up a hand vacuum pump with a built in gauge at an autoparts store. Pump it up to a couple of pounds and see if it holds it. This will run you a few bucks. A foot of vacuum line is only a few cents, you could always try just replacing it. This is if you're suspecting the line of course. Are we suspecting a leaky diaphragm in the petcock or perhaps the nipple on the side of intake that the vacuum line connects to?
-Kyle On Wed, Oct 6, 2010 at 11:48 AM, Chris Besignano <[email protected]>wrote: > Hi all, > > It's a quiet day on the forum so here's a question: > > How do I test if my bike has a vacuum leak? I suspect carb #2 (vacuum to > petcock) is leaking and want to verify, what do I do? > > Thanks > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nighthawk_lovers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
